Low-Temperature CO oxidation on multicomponent gold based catalysts

Low-Temperature CO oxidation on multicomponent gold based catalysts

In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results obtained by means of XPS, UV-Vis spectroscopy and H2-TPR are employed to correlat...

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Bibliographic Details
Main Authors: Tomas eRamirez Reina, Svetlana eIvanova, Miguel Angel eCenteno, Jose Antonio eOdriozola
Format: Article
Language:English
Published: Frontiers Media S.A. 2013-09-01
Series:Frontiers in Chemistry
Subjects:
iron oxide
Cerium oxide
CO oxidation
gold catalysts
mixed oxides
Online Access:http://journal.frontiersin.org/Journal/10.3389/fchem.2013.00012/full
Description
Summary:In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results obtained by means of XPS, UV-Vis spectroscopy and H2-TPR are employed to correlate the activity data with the catalysts composition. The bare γ-alumina supported gold catalyst demonstrates the poorest activity within the series. The addition of CeO2 or FeOX improves the catalytic performance, especially observed for the CeO2-FeOx mixed oxide doped samples. This enhanced CO oxidation activity was related to the Ce-Fe interaction producing materials with promoted redox properties and therefore oxidation activity
ISSN:2296-2646

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